The waterproof screw "Asfa(R) WP" combines stable waterproofing with high axial force due to sinkage reduction.
"Asufa(R) WP" is a newly conceived waterproof screw that incorporates a flat washer in addition to an O-ring located beneath the neck. Since the O-ring can be positioned on the outer circumference of the screw head, it maintains stable waterproof performance even if the fastening element shifts. Additionally, it secures sufficient contact surface, allowing for fastening with higher axial force without causing the fastening element to sink. Furthermore, in the automatic screw tightening process, the flat washer (metal) makes contact with the chute rail of the screw supply machine, enabling smooth transportation. [Features of Asufa(R) WP] ■ Provides stable waterproof performance with minimal impact from the shifting of fastening elements. ■ Allows for fastening with higher axial force by reducing the sinking of fastening elements. ■ Achieves smooth transportation by having the flat washer contact the chute rail in the automatic screw tightening process. *For more details, please refer to the PDF document or feel free to contact us.
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【Compatible Sizes and Materials】 ■Screw sizes: φ3, φ4, φ5 ■Screw and washer materials: Iron, SUS, etc. ■O-ring materials: EPDM, NBR, SR, FKM, etc. *The materials for the drive part, screw part, and O-ring can be customized. Please feel free to contact us. *Manufacturer: Nitto Seiko Co., Ltd.
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■Products that require stable waterproof performance (outdoor equipment, measuring instruments, etc.) ■Products that require fastening with high axial force (automotive parts, railway-related items, etc.) ■Automation of O-ring screw fastening (for production sites troubled by chocolate stops) *For more details, please refer to the PDF document or feel free to contact us.*
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As the advancement of IoT, changes in power sources, the expansion of AI applications, and the shift towards systems that do not rely on human labor in manufacturing are bringing various industries into a period of transformation, we are proposing a variety of solutions tailored to our customers' needs.